Rehabilitation After Ocular Trauma Indian Medical PG Practice Questions and MCQs
Practice Indian Medical PG questions for Rehabilitation After Ocular Trauma. These multiple choice questions (MCQs) cover important concepts and help you prepare for your exams.
Rehabilitation After Ocular Trauma Indian Medical PG Question 1: A case of injury to right brow due to a fall from scooter presents with sudden loss of vision in the right eye. The pupil shows absent direct reflex but a normal consensual pupillary reflex is present. The fundus is normal. The treatment of choice is:
- A. Pulse methyl Prednisolone 250 mg four times daily for three days
- B. Emergency optic canal decompression
- C. Oral Prednisolone 1.5 mg/kg body weight
- D. Intensive intravenous corticosteroids as prescribed for spinal injuries to be instituted within six hours (Correct Answer)
Rehabilitation After Ocular Trauma Explanation: ***Intensive intravenous corticosteroids as prescribed for spinal injuries to be instituted within six hours***
- The sudden **loss of vision** with a **traumatic brow injury** and **afferent pupillary defect** (absent direct reflex, normal consensual) suggests **traumatic optic neuropathy (TON)**.
- While the efficacy of corticosteroids is debated, high-dose intravenous corticosteroids, often following the **National Acute Spinal Cord Injury Study (NASCIS)** protocols (similar to spinal injury treatment), are a common initial treatment for TON, especially when administered within 6-8 hours of injury to reduce inflammation and edema around the optic nerve.
*Pulse methyl Prednisolone 250 mg four times daily for three days*
- This dosage regimen is a form of **pulse steroid therapy**, but the specific dose and frequency may not align with the standard high-dose IV corticosteroid protocols used for TON (e.g., typically 1g methylprednisolone daily).
- While corticosteroids are used, the precise protocol and optimal dosing for TON are critical and vary from this option.
*Emergency optic canal decompression*
- **Optic canal decompression surgery** is considered in cases of TON where there is direct compression of the optic nerve or a lack of response to corticosteroid therapy.
- It is not the initial treatment of choice for all TON cases and carries significant surgical risks; corticosteroid therapy is usually attempted first.
*Oral Prednisolone 1.5 mg/kg body weight*
- **Oral corticosteroids** are generally not sufficient for the acute, severe inflammation seen in traumatic optic neuropathy.
- **Intravenous administration** is preferred for its rapid and higher systemic bioavailability to achieve therapeutic levels at the optic nerve.
Rehabilitation After Ocular Trauma Indian Medical PG Question 2: A patient presents with acute appendicitis. What is NOT to be done?
- A. Give antibiotics
- B. Do primary survey
- C. Perform appendectomy
- D. Check for visual acuity (Correct Answer)
Rehabilitation After Ocular Trauma Explanation: ***Check for visual acuity***
- **Visual acuity** assessment is not relevant to the diagnosis or management of **acute appendicitis**.
- This examination is typically performed in cases of suspected eye injury, vision changes, or neurological issues that affect vision.
- In the context of acute appendicitis, checking visual acuity would be inappropriate and waste valuable time.
*Give antibiotics*
- **Antibiotics** are crucial in managing **acute appendicitis** to prevent progression to perforation and reduce postoperative infection risk.
- They are typically administered preoperatively and continued postoperatively, especially in cases of complicated appendicitis.
- Broad-spectrum antibiotics covering **gram-negative organisms and anaerobes** are standard practice.
*Do primary survey*
- A **primary survey** (ABCDE approach) is essential in any emergent patient presentation to assess and manage immediate **life-threatening conditions**.
- While appendicitis itself may not be immediately life-threatening, ensuring patient stability and ruling out other serious conditions is critical.
- This is standard emergency medicine practice and should always be performed.
*Perform appendectomy*
- **Appendectomy** (surgical removal of the appendix) is the definitive treatment for **acute appendicitis**.
- This is the standard of care and should be performed once the diagnosis is confirmed and the patient is stable.
- Either open or laparoscopic approach can be used depending on clinical factors and surgeon expertise.
Rehabilitation After Ocular Trauma Indian Medical PG Question 3: Which of the following is the first visual field defect in open-angle glaucoma?
- A. Ring scotoma
- B. Paracentral scotoma (Correct Answer)
- C. Bitemporal hemianopia
- D. Tunnel vision
Rehabilitation After Ocular Trauma Explanation: ***Paracentral scotoma***
- This is the **earliest visual field defect** detected in open-angle glaucoma, typically appearing in the **Bjerrum area** (10-20° from fixation).
- Most commonly occurs as a **superior or inferior arcuate scotoma** in the nasal field.
- Results from damage to the **retinal nerve fiber layer** around the **optic disc**, which is particularly vulnerable to elevated intraocular pressure.
- These scotomas respect the **horizontal raphe** and follow the arcuate nerve fiber bundle pattern.
*Ring scotoma*
- A **ring scotoma** (Bjerrum scotoma) typically occurs later in the progression of glaucoma, when superior and inferior arcuate defects coalesce to form a ring-like pattern.
- This represents **advanced glaucomatous damage** and is not an early finding.
*Bitemporal hemianopia*
- This visual field defect is characteristic of **optic chiasm compression**, commonly due to a **pituitary tumor** or other suprasellar lesions.
- It is **not associated with glaucoma**, which causes damage to the optic nerve fibers within the eye, not at the chiasm.
*Tunnel vision*
- **Tunnel vision** represents severe, **end-stage glaucoma**, where only a small central island of vision remains.
- It indicates extensive loss of peripheral visual field and is a late finding, not an early one.
Rehabilitation After Ocular Trauma Indian Medical PG Question 4: Which of the following is not a standard treatment for myopia?
- A. Phakic intraocular lens
- B. Radial Keratotomy
- C. Holmium laser thermoplasty (Correct Answer)
- D. LASIK
Rehabilitation After Ocular Trauma Explanation: ***Holmium laser thermoplasty***
- This procedure was explored for the treatment of **hyperopia**, not myopia, as it aims to steepen the cornea to increase its refractive power.
- It involves using a holmium laser to apply heat to the peripheral cornea, causing **collagen shrinkage** and steepening, which is the opposite of what is needed for myopia correction.
*LASIK*
- **LASIK (Laser-Assisted in Situ Keratomileusis)** is a common and effective surgical procedure for correcting myopia by reshaping the cornea to reduce its refractive power.
- It involves creating a **corneal flap** and using an excimer laser to remove tissue from the underlying stromal bed.
*Phakic intraocular lens*
- **Phakic intraocular lenses (IOLs)** are implanted into the eye without removing the natural lens and are a standard treatment for moderate to high myopia, especially in patients not suitable for LASIK.
- They work by adding refractive power to the eye, allowing light to focus correctly on the retina.
*Radial Keratotomy*
- **Radial Keratotomy (RK)** was an early surgical procedure for myopia, involving making radial incisions in the cornea to flatten it and reduce its refractive power.
- Although largely replaced by LASIK due to its unpredictable outcomes and potential for glare and night vision problems, it was historically a standard treatment for myopia.
Rehabilitation After Ocular Trauma Indian Medical PG Question 5: In infants of diabetic mothers (IDM), when is ophthalmologic evaluation indicated?
- A. At the time of diagnosis
- B. Only if visual symptoms develop (Correct Answer)
- C. After 5 years routinely
- D. After developing diabetes
Rehabilitation After Ocular Trauma Explanation: ***Only if visual symptoms develop***
- Unlike **retinopathy of prematurity**, infants of diabetic mothers (IDMs) do not have a higher incidence of **retinopathy** or other **ocular abnormalities** at birth or in early infancy.
- **Ophthalmologic evaluation** is generally reserved for IDMs who develop specific **visual symptoms** or signs of ocular pathology.
*At the time of diagnosis*
- Routine ophthalmologic screening at the time of diagnosis of IDM is **not standard practice**, as the risk of **congenital ocular anomalies** is not substantially elevated to warrant universal screening.
- Initial management focuses on metabolic stability, especially **glucose control**, and screening for other common IDM-related complications like **cardiac defects** or **respiratory distress**.
*After 5 years routinely*
- There is **no evidence or recommendation** for routine ophthalmologic screening of IDMs specifically at the age of 5 years.
- Regular **well-child check-ups** include basic vision screening, which would identify significant refractive errors or strabismus, but not specifically for diabetes-related ocular issues.
*After developing diabetes*
- While it is true that individuals with **type 1 or type 2 diabetes** require regular **ophthalmologic evaluations** for **diabetic retinopathy**, this refers to the child developing diabetes later in life, not being an IDM.
- Being an IDM is a **risk factor for developing diabetes** later in life, but it doesn't automatically mean they have diabetes-related ocular issues from birth.
Rehabilitation After Ocular Trauma Indian Medical PG Question 6: A 25-year-old person developed right corneal opacity following injury to the eye. Keratoplasty of right eye was done and vision was restored. Medico-legally such injury is:
- A. Dangerous
- B. Grievous
- C. Simple (Correct Answer)
- D. Non-grievous
Rehabilitation After Ocular Trauma Explanation: ***Simple***
- The injury resulted in corneal opacity that was **successfully treated with keratoplasty and vision was restored**.
- Under IPC Section 320, **grievous hurt** requires **permanent privation of sight**, not temporary visual impairment.
- Since vision was restored after treatment, there is **no permanent damage**, making this a **simple injury**.
- Simple injuries may require medical treatment and cause temporary incapacitation, but do not result in permanent impairment.
*Grievous*
- Grievous hurt under IPC Section 320 includes **permanent privation of the sight of either eye**.
- The key word is **permanent** - since vision was restored after keratoplasty, the visual loss was temporary, not permanent.
- This injury does not meet the criteria for grievous hurt despite requiring surgical intervention.
*Dangerous*
- "Dangerous" is not a specific medico-legal classification of injury under IPC Section 320.
- This term may describe the potential severity but is not used to categorize injuries legally.
*Non-grievous*
- While technically correct (as non-grievous means not grievous), the proper legal term is **"simple injury"**.
- In medico-legal practice, injuries are classified as either grievous or simple, not as "non-grievous".
Rehabilitation After Ocular Trauma Indian Medical PG Question 7: Sympathetic ophthalmia is due to
- A. Chemical injury
- B. Blunt trauma
- C. Retained intra ocular Iron foreign body
- D. Penetrating trauma (Correct Answer)
Rehabilitation After Ocular Trauma Explanation: ***Penetrating trauma***
- **Sympathetic ophthalmia** is a rare, bilateral granulomatous panuveitis that occurs after **penetrating trauma** or surgery to one eye (the exciting eye).
- The injury exposes **uveal antigens** to the immune system, leading to a delayed hypersensitivity reaction affecting both the injured and the uninjured (sympathizing) eye.
*Chemical injury*
- Chemical injuries to the eye typically cause corneal damage, conjunctivitis, and uveitis, but do not commonly lead to the bilateral immune response characteristic of **sympathetic ophthalmia**.
- The mechanism of injury in chemical trauma does not involve the exposure of hidden ocular antigens in a way that triggers **autoimmune uveitis**.
*Blunt trauma*
- **Blunt trauma** to the eye can cause various issues like hyphema, retinal detachment, or orbital fractures.
- While it can cause significant damage, it generally does not typically breach the globe in a manner that exposes uveal tissue to the systemic immune system, leading to **sympathetic ophthalmia**.
*Retained intra ocular Iron foreign body*
- An intraocular **iron foreign body** can cause **siderosis bulbi**, a condition where iron deposition leads to pigmentation and degeneration of ocular tissues.
- This is a direct toxic effect of iron and is distinct from the immune-mediated inflammation seen in **sympathetic ophthalmia**.
Rehabilitation After Ocular Trauma Indian Medical PG Question 8: Berlin's edema is due to
- A. Blunt trauma to eye (Correct Answer)
- B. Choroidal melanoma
- C. Pars planitis
- D. Extradural hemorrhage
Rehabilitation After Ocular Trauma Explanation: ***Blunt trauma to eye***
- **Berlin's edema**, also known as **commotio retinae**, is a form of **retinal edema** that occurs after **blunt trauma to the eye**.
- The trauma causes a disruption of the photoreceptor outer segments and retinal pigment epithelium, leading to extracellular and intracellular fluid accumulation.
*Choroidal melanoma*
- This is a **malignant tumor** arising from the melanocytes in the choroid, not caused by trauma.
- Presents as a pigmented mass in the choroid and can lead to **retinal detachment** or **vision loss** due to tumor growth.
*Pars planitis*
- This is a form of **intermediate uveitis**, characterized by inflammation of the pars plana, ciliary body, and peripheral retina.
- It is an **inflammatory condition**, not directly caused by acute trauma, and often presents with **floaters** and **blurred vision**.
*Extradural hemorrhage*
- This refers to bleeding between the inner surface of the skull and the dura mater, typically in the brain.
- It is a **neurological emergency** usually caused by head injury, and its direct effect is not Berlin's edema in the eye.
Rehabilitation After Ocular Trauma Indian Medical PG Question 9: Hyphaema, or blood in the anterior chamber, is suggestive of:
- A. Intraocular trauma (Correct Answer)
- B. Posterior uveitis
- C. Capillary hemangioma of the lid
- D. High grade myopia
Rehabilitation After Ocular Trauma Explanation: ***Intraocular trauma***
- **Hyphaema**, or blood in the **anterior chamber**, is a classic sign of **intraocular trauma**, where eye structures are damaged, leading to bleeding.
- This can result from blunt force or penetrating injuries that rupture blood vessels within the **iris, ciliary body**, or other anterior segment structures.
*Posterior uveitis*
- Posterior uveitis involves inflammation of the **choroid and retina**, not typically causing bleeding into the **anterior chamber**.
- It presents with symptoms like **floaters** and **decreased vision**, without direct hyphaema.
*Capillary hemangioma of the lid*
- A capillary hemangioma is a **benign vascular tumor** on the eyelid and does not cause **intraocular bleeding** into the anterior chamber.
- While it can disrupt vision by blocking the visual axis, it is an **external lesion**.
*High grade myopia*
- High grade myopia leads to a **stretched globe** and **retinal thinning**, increasing the risk of **retinal detachment** or **macular degeneration**.
- It does not directly cause **hyphaema**, which is an anterior chamber bleeding event.
Rehabilitation After Ocular Trauma Indian Medical PG Question 10: True about acid injury to eye are all except?
- A. more destructive than alkali injuries (Correct Answer)
- B. steroids are used to control inflammation
- C. makes a barrier and prevent deeper penetration
- D. glaucoma is most preventable complication following acid injury
Rehabilitation After Ocular Trauma Explanation: ***more destructive than alkali injuries***
- This statement is **false**. **Alkali burns** are generally more severe than acid burns because alkalis have **liquefactive necrosis**, which allows them to penetrate deeper into ocular tissues.
- Acids cause **coagulative necrosis**, which forms a protective barrier that limits further penetration, making them typically less destructive than alkali injuries.
*steroids are used to control inflammation*
- **Topical corticosteroids** are commonly used in the management of ocular chemical burns, including acid injuries, to help **control inflammation** and reduce the risk of secondary complications.
- However, their use must be carefully monitored due to potential side effects like increased intraocular pressure and delayed corneal healing.
*makes a barrier and prevent deeper penetration*
- **Acidic substances** cause **coagulative necrosis** of the superficial tissues, which creates a protective barrier of denatured proteins.
- This barrier helps to prevent the acid from penetrating deeper into the ocular structures, thus often limiting the extent of damage compared to alkali burns.
*glaucoma is most preventable complication following acid injury*
- **Glaucoma** is indeed a significant complication of ocular acid injuries and can be prevented through **immediate copious irrigation**, control of inflammation, and monitoring of intraocular pressure.
- While various complications can occur (corneal opacification, symblepharon, limbal stem cell deficiency), glaucoma prevention through early intervention and appropriate medical management is a key focus in acute management, making this statement acceptable as true.
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